package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.OrdersPageQueryDTO;
import com.sky.dto.OrdersPaymentDTO;
import com.sky.dto.OrdersSubmitDTO;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.service.WebSocketServes;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;

import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;

@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServes webSocketServes;

    //  注入配置项
    @Value("${sky.shop.address}")
    private String shopAddress;
    @Value("${sky.baidu.ak}")
    private String ak;
    //定义获取地理编码的URL
    public static String URL = "https://api.map.baidu.com/geocoding/v3";

    /**
     * 用户下单管理
     *
     * @param ordersSubmitDTO
     * @return
     */
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //处理各种业务异常

        //1 购物车为空，抛出异常信息
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = ShoppingCart.builder().userId(userId).build();



        //查询当前用户购物车数据
        List<ShoppingCart> shoppingCarts = shoppingCartMapper.list(shoppingCart);
        if (shoppingCarts == null || shoppingCarts.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //2 地址为空，抛出异常信息
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //检查用户地址是否超出范围
        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        //向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);

        orders.setUserId(userId);
        orders.setPhone(addressBook.getPhone());
        orders.setAddress(addressBook.getProvinceName() + " " + addressBook.getCityName() + " " + addressBook.getDistrictName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setNumber(String.valueOf(System.currentTimeMillis()));//使用时间戳作为订单号
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);

        orderMapper.insert(orders);

        //向订单明细表插入n条数据（n个商品，每个商品对应1条订单明细）
        List<OrderDetail> orderDetailList = new ArrayList<OrderDetail>();
        for (ShoppingCart cart : shoppingCarts) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());//设置当前订单关联订单id

            orderDetailList.add(orderDetail);
        }

        orderDetailMapper.insertBatch(orderDetailList);

        OrderSubmitVO orderSubmitVO = new OrderSubmitVO();

        orderSubmitVO.setId(orders.getId());
        orderSubmitVO.setOrderTime(orders.getOrderTime());
        orderSubmitVO.setOrderNumber(orders.getNumber());
        orderSubmitVO.setOrderAmount(orders.getAmount());

        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .userId(userId)
                .build();

        orderMapper.update(orders);

        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("content","订单号"+outTradeNo);
        String json = JSON.toJSONString(map);

        //通过WebSocket实现来单提醒，向客户端浏览器推送消息
        webSocketServes.sendToAllClient(json);

    }

    /**
     * 查询历史订单
     *
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult historyOrders(OrdersPageQueryDTO ordersPageQueryDTO) {
        Long userId = BaseContext.getCurrentId();
        ordersPageQueryDTO.setUserId(userId);

        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());

        Page<Orders> page = orderMapper.queryByConditions(ordersPageQueryDTO);
        long total = page.getTotal();

        List<Orders> ordersList = page.getResult();
        List<OrderVO> orderVOList = new ArrayList<>();
        for (Orders order : ordersList) {

            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(order, orderVO);

            List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(order.getId());
            orderVO.setOrderDetailList(orderDetailList);
            orderVOList.add(orderVO);

        }
        return new PageResult(total, orderVOList);
    }

    /**
     * 查看订单详情
     *
     * @param id
     * @return
     */
    public OrderVO orderDetail(Long id) {

        Long userId = BaseContext.getCurrentId();

        Orders order = orderMapper.getByIdAndUserId(id, userId);

        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order, orderVO);
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 取消订单
     *
     * @param id
     */
    public void cancelOrder(Long id) {
        Long userId = BaseContext.getCurrentId();

        Orders order = orderMapper.getByIdAndUserId(id, userId);
        Integer status = order.getStatus();
        if (status > 6 || status < 0) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        } else if (status == 5) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_EXIST);
        } else if (status == 6) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_CANCEL);
        }
        order.setStatus(Orders.CANCELLED);
        orderMapper.update(order);
    }

    /**
     * 再来一单，将商品放入购物车
     *
     * @param id
     */
    public void repetitionOrder(Long id) {
        Long userId = BaseContext.getCurrentId();
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        for (OrderDetail orderDetail : orderDetailList) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart);
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }
    }

    /**
     * 订单搜索
     *
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {

        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());

        Long userId = BaseContext.getCurrentId();
        ordersPageQueryDTO.setUserId(userId);
        Page<Orders> page = orderMapper.queryByConditions(ordersPageQueryDTO);
        //获取总记录数
        long total = page.getTotal();

        //获取返回的Orders集合，并将其类型转化为OrderVO并返回前端
        List<Orders> orders = page.getResult();
        List<OrderVO> orderVOList = new ArrayList<>();
        for (Orders order : orders) {
            String orderDishes = "";
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(order, orderVO);
            List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(order.getId());
            for (OrderDetail orderDetail : orderDetailList) {
                orderDishes += orderDetail.getName() + " ";
            }
            orderVO.setOrderDishes(orderDishes);
            orderVOList.add(orderVO);
        }
        return new PageResult(total, orderVOList);
    }

    /**
     * 统计各个状态订单
     *
     * @return
     */
    public OrderStatisticsVO orderStatistics() {

        Integer ToBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer Confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer DeliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);


        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(ToBeConfirmed);
        orderStatisticsVO.setConfirmed(Confirmed);
        orderStatisticsVO.setDeliveryInProgress(DeliveryInProgress);

        return orderStatisticsVO;
    }

    /**
     * 接单
     *
     * @param orders
     */
    public void confirm(Orders orders) {

        Integer status = orderMapper.getById(orders.getId()).getStatus();

        //如果订单不是待接单状态，抛出订单状态异常
        if (status != Orders.TO_BE_CONFIRMED) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();
        orders.setUserId(userId);

        orders.setStatus(Orders.CONFIRMED);
        orderMapper.update(orders);
    }

    /**
     * 拒单
     *
     * @param orders
     */
    public void rejection(Orders orders) {

        Integer status = orderMapper.getById(orders.getId()).getStatus();

        //如果订单不是待接单状态，抛出订单状态异常
        if (status != Orders.TO_BE_CONFIRMED) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();
        orders.setUserId(userId);

        orders.setStatus(Orders.CANCELLED);
        orderMapper.update(orders);
    }

    /**
     * 取消订单
     *
     * @param orders
     */
    public void cancel(Orders orders) {
        Integer status = orderMapper.getById(orders.getId()).getStatus();
        //如果订单是已完成状态，抛出订单状态异常
        if (status == Orders.COMPLETED) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_EXIST);
        } else if (status == Orders.CANCELLED) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();
        orders.setUserId(userId);
        //将订单状态设置为取消
        orders.setStatus(Orders.CANCELLED);
        orderMapper.update(orders);
    }

    /**
     * 派单
     *
     * @param id
     */
    public void delivery(Long id) {
        //根据id获取订单
        Orders orders = orderMapper.getById(id);

        //根据如果订单状态不为待派单，抛出异常
        Integer status = orders.getStatus();
        if (status != Orders.CONFIRMED) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //将订单状态设置为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        //根据id获取订单
        Orders orders = orderMapper.getById(id);

        //根据如果订单状态不为派送中，抛出异常
        Integer status = orders.getStatus();
        if (status != Orders.DELIVERY_IN_PROGRESS) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //将订单状态设置为已完成
        orders.setStatus(Orders.COMPLETED);
        orderMapper.update(orders);

    }

    /**
     * 接入百度地图路线比较
     * @param address
     */
    public void checkOutOfRange(String address) {

        Map map = new HashMap();
        map.put("address", shopAddress);
        map.put("output", "json");
        map.put("ak", ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet(URL, map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //店铺数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet(URL, map);
        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }
        //用户地址数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米

            throw new OrderBusinessException("超出配送范围");
        }
    }

    /**
     * 客户催单
     * @param id
     */
    public void reminder(Long id) {

        Orders orders = orderMapper.getById(id);

        Map map = new HashMap();
        map.put("type",2);
        map.put("id",id);
        map.put("content","订单号:"+orders.getNumber());

        String json = JSON.toJSONString(map);
        webSocketServes.sendToAllClient(json);

    }
}
